Methyl 3,6-dimethylresorcylate is prepared by aromatization of corresponding
hydroxycyclohexenones, for example, by dehydrogenation with a suitable Nhaloimide.
The intermediate hydroxycyclohexenone can be obtained either by reaction of
dimethylmalonate with 4-hexen-3-one and 5-chloro-3-hexanone or by reaction
of methyl propionylacetate with alkyl crotonate.
Another route starts from the corresponding dimethyl-1,3-dihydroxybenzene,
which is carboxylated, and the resulting dihydroxymethylbenzoic acid is esterified.